Boss database
Boss 3 of 7SwampGame data 0.221.12

Bonemass

Bonemass is the Swamp progression boss. Defeating it awards the items below and unlocks its Forsaken Power.

Base health
5,000
Boss order
3
Guaranteed drops
2
Biome
Swamp

How to summon

Offer 10 Withered Bones

Altar: Skull altar in the Swamp

Forsaken Power

Provides resistance to physical damage.

Mount the boss trophy at the Sacrificial Stones to select this power.

Boss drops and progression rewards

Quantities and chances are taken from the current boss drop table.

Preparation baseline

A reliable checklist before any progression boss attempt.

  • Use the strongest food available from the current biome tier.
  • Repair weapons, armor, shields, and tools before beginning the fight.
  • Start with the rested effect and bring the resistance or recovery meads appropriate to the biome.
  • Clear nearby enemies and place a recovery portal outside the boss attack area.

Other Swamp threats

The highest-health creature records classified in this biome.

Previous bossThe Elder

Black Forest

Next bossModer

Mountains